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Create app.py
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app.py
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def plot_penalties():
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# Plot the results
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plt.clf()
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l1_color = 'r'
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l2_color = 'g'
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elastic_net_color = 'b'
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line = np.linspace(-1.5, 1.5, 1001)
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xx, yy = np.meshgrid(line, line)
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l2 = xx**2 + yy**2
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l1 = np.abs(xx) + np.abs(yy)
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rho = 0.5
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elastic_net = rho * l1 + (1 - rho) * l2
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fig = plt.figure(figsize=(10, 10), dpi=100)
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ax = plt.gca()
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elastic_net_contour = plt.contour(
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xx, yy, elastic_net, levels=[1], colors=elastic_net_color
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)
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l2_contour = plt.contour(xx, yy, l2, levels=[1], colors=l2_color)
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l1_contour = plt.contour(xx, yy, l1, levels=[1], colors=l1_color)
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ax.set_aspect("equal")
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ax.spines["left"].set_position("center")
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ax.spines["right"].set_color("none")
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ax.spines["bottom"].set_position("center")
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ax.spines["top"].set_color("none")
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plt.clabel(
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elastic_net_contour,
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inline=1,
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fontsize=18,
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fmt={1.0: "elastic-net"},
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manual=[(-1, -1)],)
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plt.clabel(l2_contour, inline=1, fontsize=18, fmt={1.0: "L2"}, manual=[(-1, -1)])
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plt.clabel(l1_contour, inline=1, fontsize=18, fmt={1.0: "L1"}, manual=[(-1, -1)])
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plt.tight_layout()
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# plt.show()
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return fig
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title = "SGD Penalties"
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with gr.Blocks(title=title) as demo:
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gr.Markdown(f"# {title}")
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gr.Markdown(" **[Demo is based on sklearn docs](https://scikit-learn.org/stable/auto_examples/linear_model/plot_sgd_penalties.html#sphx-glr-auto-examples-linear-model-plot-sgd-penalties-py)**")
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# greet_btn.click(fn=greet, inputs=name, outputs=output)
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x = gr.Dropdown(["red", "blue", "green"], label="l1_color", type="index"),
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y = gr.Dropdown(["red", "blue", "green"], label="l2_color", type="index"),
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z = gr.Dropdown(["red", "blue", "green"], label="elastic_net_color", type="index"),
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btn = gr.Button(value="Visualize SGD penalties")
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btn.click(plot_penalties, outputs= gr.Plot() ) #
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demo.launch()
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